<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>transform-rotate函数</title>
        <style>
            img{border-radius: 50%;width:200px;}
            img:hover{transform: rotate(45deg);}
        </style>
    </head>
    <body>
        <img src="mei.jpg">
    </body>
</html>